openssl on your system.
brew install email@example.com
Then pin this version:
brew pin firstname.lastname@example.org
Note that a LibreSSL-based version of
openssl is typically pre-installed on macOS.
We do not want to use this version since it may have issues dealing with environment variables in the
openssl configuration files.
To make sure that the Homebrew-installed version is used instead of the pre-installed version, add the following line to your
bash profile or the equivalent. (
export PATH=$(brew --prefix)/email@example.com/bin:$PATH